diff --git a/Gemfile.lock b/Gemfile.lock
index c389c8f..0eb5900 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,15 +23,15 @@ GEM
       sinatra (>= 1.2.7)
     httpclient (2.8.3)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     nesty (1.0.2)
     parallel (1.19.1)
     parser (2.7.1.3)
       ast (~> 2.4.0)
     powerpack (0.1.2)
-    rack (2.2.3)
-    rack-protection (2.0.8.1)
+    rack (2.2.4)
+    rack-protection (3.0.4)
       rack
     rainbow (3.0.0)
     rake (13.0.1)
@@ -59,16 +59,16 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.10.1)
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     ruby_audit (1.2.0)
       bundler-audit (~> 0.6.0)
-    sinatra (2.0.8.1)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+    sinatra (3.0.4)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.4)
       tilt (~> 2.0)
     thor (0.20.3)
-    tilt (2.0.10)
+    tilt (2.0.11)
     unicode-display_width (1.7.0)
 
 PLATFORMS